A unidentified witness told police that Jackson had a cell phone belonging to his girlfriend. When the witness, Staley and another unidentified witness went to the New Chester Deli on Ninth Street to get the phone, an argument began. Staley "pulled out his gun and went crazy shooting Jackson at least six times," according to an affidavit.

Stanley also is wanted by Philadelphia police in connection with a separate shooting, Chester Police Capt. Joseph Massi said.